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Diseases of Ginseng Caused by Sclerotinias. 



By Geo. A. Osner. 



The diseases of giiiseug may be divided into two luain classes ; first, 

 those which attaclv primarily only the part above ground, and second, 

 those which directly affect the root of the plant. Of the former clas.^, 

 the two most destructive diseases are the Alternaria Blight and Phytoph- 

 thora INIildew. Of the latter class, four or five of the most important 

 ones may be mentioned, among which are: Wilt, End or Fiber Rot, Soft 

 IJot, and those diseases caused by Sclerotinias — the Blaclv and Crown 

 liots. It is with tlie two last named diseases that this paper deals. 



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Fig. 1. Photograph of a portion of a ginseng garden, showing a spot in one of the beds killed 

 by Black Rot fungus. 



